I hesitate to buy this product because it is more expensive than other protein shaker bottles on the market. However, the main problem I encountered was that I always lost the spiral ball and finally bought a new Shaker Bottle, because without the vibration ball, it actually became useless. I think it’s interesting that they created a Shaker Bottle that doesn’t require a shaker. It can actually do miracles! It can really stir your fans. It can do anything from my BCAA blend to my whey protein. To be honest, I think this product is better than the regular protein shaker. I drink water without dissolving insoluble protein.